char smtp_220[4] = 
/* 220 */
{0x32, 0x32, 0x30, };
char smtp_helo[6] = 
/* HELO  */
{0x48, 0x45, 0x4c, 0x4f, 0x20, };
char smtp_mail_from[12] = 
/* MAIL FROM:  */
{0x4d, 0x41, 0x49, 0x4c, 0x20, 0x46, 0x52, 0x4f, 0x4d, 0x3a, 0x20, };
char smtp_rcpt_to[10] = 
/* RCPT TO:  */
{0x52, 0x43, 0x50, 0x54, 0x20, 0x54, 0x4f, 0x3a, 0x20, };
char smtp_data[5] = 
/* DATA */
{0x44, 0x41, 0x54, 0x41, };
char smtp_to[5] = 
/* To:  */
{0x54, 0x6f, 0x3a, 0x20, };
char smtp_from[7] = 
/* From:  */
{0x46, 0x72, 0x6f, 0x6d, 0x3a, 0x20, };
char smtp_subject[10] = 
/* Subject:  */
{0x53, 0x75, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x3a, 0x20, };
char smtp_quit[5] = 
/* QUIT */
{0x51, 0x55, 0x49, 0x54, };
